| 1 | // |
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| 2 | // ip_hash_test.cpp |
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| 3 | // |
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| 4 | // Copyright 2011 Peter Dimov |
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| 5 | // |
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| 6 | // Distributed under the Boost Software License, Version 1.0. |
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| 7 | // See accompanying file LICENSE_1_0.txt or copy at |
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| 8 | // http://www.boost.org/LICENSE_1_0.txt |
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| 9 | // |
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| 10 | |
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| 11 | #include <boost/intrusive_ptr.hpp> |
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| 12 | #include <boost/functional/hash.hpp> |
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| 13 | #include <boost/core/lightweight_test.hpp> |
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| 14 | |
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| 15 | class base |
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| 16 | { |
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| 17 | private: |
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| 18 | |
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| 19 | int use_count_; |
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| 20 | |
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| 21 | base(base const &); |
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| 22 | base & operator=(base const &); |
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| 23 | |
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| 24 | protected: |
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| 25 | |
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| 26 | base(): use_count_(0) |
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| 27 | { |
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| 28 | } |
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| 29 | |
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| 30 | virtual ~base() |
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| 31 | { |
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| 32 | } |
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| 33 | |
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| 34 | public: |
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| 35 | |
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| 36 | long use_count() const |
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| 37 | { |
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| 38 | return use_count_; |
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| 39 | } |
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| 40 | |
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| 41 | inline friend void intrusive_ptr_add_ref(base * p) |
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| 42 | { |
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| 43 | ++p->use_count_; |
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| 44 | } |
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| 45 | |
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| 46 | inline friend void intrusive_ptr_release(base * p) |
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| 47 | { |
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| 48 | if(--p->use_count_ == 0) delete p; |
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| 49 | } |
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| 50 | }; |
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| 51 | |
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| 52 | struct X: public base |
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| 53 | { |
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| 54 | }; |
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| 55 | |
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| 56 | int main() |
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| 57 | { |
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| 58 | boost::hash< boost::intrusive_ptr<X> > hasher; |
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| 59 | |
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| 60 | boost::intrusive_ptr<X> p1, p2( p1 ), p3( new X ), p4( p3 ), p5( new X ); |
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| 61 | |
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| 62 | BOOST_TEST_EQ( p1, p2 ); |
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| 63 | BOOST_TEST_EQ( hasher( p1 ), hasher( p2 ) ); |
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| 64 | |
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| 65 | BOOST_TEST_NE( p1, p3 ); |
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| 66 | BOOST_TEST_NE( hasher( p1 ), hasher( p3 ) ); |
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| 67 | |
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| 68 | BOOST_TEST_EQ( p3, p4 ); |
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| 69 | BOOST_TEST_EQ( hasher( p3 ), hasher( p4 ) ); |
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| 70 | |
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| 71 | BOOST_TEST_NE( p3, p5 ); |
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| 72 | BOOST_TEST_NE( hasher( p3 ), hasher( p5 ) ); |
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| 73 | |
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| 74 | return boost::report_errors(); |
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| 75 | } |
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| 76 | |
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